<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>生成器</title>
  </head>
  <body>
    <script>
      //生成器其实就是一个特殊的函数
      //异步编程  纯回调函数  node fs  ajax mongodb
      //函数代码的分隔符
      function* gen() {
        console.log(111)
        yield '一只没有耳朵'
        console.log(222)
        yield '一只没有尾部'
        console.log(333)
        yield '真奇怪'
        console.log(444)
      }

      let iterator = gen()
      console.log(iterator.next())
      console.log(iterator.next())
      console.log(iterator.next())
      console.log(iterator.next())

      //遍历
      for (let v of gen()) {
        console.log(v)
      }
    </script>
  </body>
</html>
